Study on high resolution image classification for Dongsha Island based on fuse information

Information extraction and geographic law knowledge were established based on SPOT5 10m multi-bands high resolution images.In order to reduce error of the information extraction and to improve interpreting precision,a spectral analysis for the choosed samples,and a fuse information analysis were made.The results show that(1) the samples based on fuse information can indicate spectral information,(2)high resolution images make Dongsha Island characteristics clear and siow lagoons,and sea mouth developed states.and(3)the fuse information of high resolution images can clearly show land use type. On the basis of the Kappa analysis,the error of the method reaches 78.33%.,which can indicate Dongsha Island land use well.